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Uploading firmware during mass manufacturing

Hello Everyone,

This query regarding programming of board during mass manufacturing. I am using nrf51822, S130, SDK11. I combined softdevice, bootloader, and application code in one hex file and tried to upload the hex file. It takes roughly 23 second to upload this hex file using nrfgostudio windows application. Consider that I have to upload the firmware in 3000pcs of PCBA, it will consume a lot of time during manufacturing of product. I want to know is there any faster method or any other software which can be used to erase the chip and upload new hex file quickly?

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